TaxMaverick
Tax Strategy application with AI-powered features
- •Optimized load times for Smart pick strategies
- •Usage of Next.js, Supabase, and ShadCN
Next.jsSupabaseAITypeScript
Software Engineer & Cybersecurity Researcher
Build thingsthat matter.
I'm Jhury Kevin Lastre, a passionate Software Engineer with nearly 5 years of professional experience specializing in full-stack development, DevOps, and cybersecurity research. Currently leading OWASP Cebu and pursuing advanced research in 5G Security, Embedded SIM (eSIM), and security protocol analysis in South Korea.
Seoul, South Korea
Explore
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Career Journey
Professional Experience
CyberSecurity Researcher
CurrentMobiSec Lab, Kookmin University
Sep 2024 — PresentSeoul, South Korea
- •Machine learning on Intrusion Detection (RF, Isolation Forest, XGBoost, XAI with SHAP, SLMs, LLMs)
- •IoT Deployment Performance Testbed (Docker, k8s, Prometheus, Grafana k6, tc netem)
- •Deploy 5G Core Network Functions using Open5GS, Docker and Kubernetes
- •Performance testing on security protocols (M2M eSIM, Consumer eSIM, TLS 1.3, PSK 0-RTT)
Software Engineer
CurrentTax Maverick Software
Aug 2024 — PresentUnited States of America
- •Build and maintain IRS Tax Calculation on Federal and State
- •Build strategy suggestion engine for tax advisors
- •Use LLMs and RAG for strategy comparison
- •Develop new features using Next.js and Supabase
Full Stack Software Developer - Enterprise
WebriQ Technologies
Jul 2024 — Jul 2024Cebu, Philippines
- •Design a prototype to convert Figma designs to Next.js Code using Open AI
- •Plan and contribute to formulation, development, and overall software architecture
Software Development Engineer (Mid-level)
Lanex Corporation
Sep 2023 — Jun 2024Cebu City, Philippines
- •Created major features for filtering and data visualization
- •Built management system using Next.js, GraphQL, Prisma and Hasura
- •Developed full-stack project using Nuxt, Laravel and JSON:API
- •Built android application using Kotlin and GraphQL
Software Developer
Purple Cow - Philippines
Jul 2023 — Sep 2023Cebu City, Philippines
- •Developed backend architecture using Node.js with TypeScript
- •Implemented JWT authentication, API protection, rate limiters
- •Designed database schema for MongoDB
- •Used Azure for hosting, Blob storage and image uploads
Software Developer Intern
Symph
Aug 2022 — Nov 2022Cebu City, Philippines
- •Frontend development using React and TypeScript
- •Worked with Ant Design and Chakra UI
- •Fixed authentication bugs using Node.js with Passport.js
- •Improved User Experience and reduced cognitive complexity
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Academic Background
Education & Learning
Masters in Cybersecurity
CurrentKookmin University (국민대학교)
Sep 2024 — PresentSeoul, South Korea
- •eSIM & Remote Sim Provisioning
- •Web API Security
- •Cryptanalysis and Formal Verification of Security Protocols
Bachelor of Science in Computer Engineering
University of San Carlos
Aug 2020 — Jun 2024Cebu City, Philippines
Cum Laude(GPA: 1.33)
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Featured Work
Selected Projects
virtual eSIM
GSMA Remote SIM Provisioning for Consumer Device
- •Develop a virtual eSIM using C that interfaces with SM-DP+ and LPAC
- •APDU handlers and manual implementation of cryptographic protocols
CCryptographyeSIMGSMA
Open5GS Roaming in K8s
Docker and Kubernetes implementation of Open5GS network functions
- •Publication and testbed implementation of Open5GS network functions in k8s
KubernetesDocker5GOpen5GS
C.Scope.AI
Microplastic Identification using CNNs
- •Usage of pyTorch, Docker, FastAPI, Roboflow
- •Meta's detectron for microplastic detection and classification
PythonPyTorchDockerML
Other Notable Projects
M2M eSIM Testbed
GSMA Remote SIM Provisioning for Machine to Machine
PythoneSIMGSMA
OWASP Cebu
CTF and Organization Website
Next.jsCTFSecurity
AI Jeongamsu
AI Chatbot support for Kookmin University
AIChatbotLLM
Kuroshio
Mobile and Web app for a Japanese moving company
KotlinNext.jsGraphQL
Regalis
Job Posting/Matcher platform for Japan
Next.jsHasuraPrisma
Chelo
Event management system SaaS
Next.jsDrizzleSaaS
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Community & Leadership
Organizations
OWASP Cebu
Chapter Lead
Jan 2023 — PresentVisit Website
Leading the Open Web Application Security Project (OWASP) Cebu chapter, organizing workshops, talks, and community events focused on web application security and cybersecurity awareness in the Philippines.
Key Achievements
- •Organized multiple security workshops and training sessions
- •Built a community of security enthusiasts and professionals
- •Conducted API hacking and web security training programs
- •Created educational content and resources for the community
Cybersecurity
Community Leadership
OWASP
Education
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Teaching & Training
Workshops & Speaking
Featured Workshops
Practical API Hacking on the Web
OWASP Cebu Summer Workshop
Jun 2024Cebu, Philippines
Taught burpsuite, wfuzz, ffuf, postman. Managed entire workshop from speakers to audiences and venue
API SecurityPenetration TestingSecurity Tools
Full Stack Generative AI Apps with Next.js, Supabase, Prisma and Open AI
Tech Workshop
May 2024Cebu and Bohol
Comprehensive workshop on building full-stack AI applications
Next.jsSupabasePrisma
All Workshops & Talks
Building Flexible Websites with Next.js and GraphQL
Sprout Up Bohol
Mar 2024Bohol
Taught Next.js, Strapi CMS, and GraphQL API architecture
Next.jsGraphQLStrapi
Introduction to Cybersecurity
iAcademy Cebu
Nov 2023Cebu
Introduction to fundamental cybersecurity concepts and practices
CybersecuritySecurity Fundamentals
Project Taytayan
Google DevFest Cebu 2023
Oct 2023Cebu
Showcase project built using Next.js and Firebase to help workers get training and more job opportunities
Next.jsFirebaseSocial Impact
HTML, CSS, and JavaScript
Google Developer Student Clubs - San Carlos
Aug 2023San Carlos
Taught basic web development skills using the fundamental web technologies
HTMLCSSJavaScript
React.js Workshop
Google Developer Student Clubs - San Carlos
Jul 2023San Carlos
Taught basic React to participants including set up, deployment, hooks, and component lifecycles
ReactJavaScriptComponent Architecture
Firebase Workshop
Google Developer Student Clubs - San Carlos
Jun 2023San Carlos
Taught basic Firebase set up with Vanilla JS. Taught basic cloud functions for CRUD applications in Firestore
FirebaseCloud FunctionsFirestore
Data Structures and Algorithms
Computer Engineering Council - San Carlos
May 2023San Carlos
Helped freshmen review for incoming practical exams involving DSA such as Linked Lists, Trees, and Graphs, as well as basic sorting algorithms
Data StructuresAlgorithmsProblem Solving
JUMP Camp - C programming basics
Computer Engineering Council - San Carlos
Apr 2023San Carlos
Taught C programming fundamentals to kids and teenagers from our partnered local community
C ProgrammingProgramming BasicsCommunity Outreach
Git to the Cloud
Microsoft Learn
Mar 2023Online
Taught basic Git commands and collaboration in Git. Taught industry level flows in terms of how to collaborate with a team. Taught basic CI/CD using GitHub actions and Basic testing using Jest. Taught deployment with CI/CD to AWS App Runner
GitCI/CDGitHub Actions
LinkedIn and Portfolio/Resume Building
Microsoft
Feb 2023Online
Taught portfolio management and Resume building. Taught networking and LinkedIn profile building
Career DevelopmentNetworkingPersonal Branding
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Technical Expertise
Skills & Technologies
Languages
TypeScript
JavaScript
Python
C
Kotlin
PHP
SQL
Frontend
React
Next.js
Nuxt.js
Tailwind CSS
ShadCN UI
Backend
Node.js
Express
Laravel
FastAPI
GraphQL
Databases
MongoDB
PostgreSQL
Supabase
Prisma
Hasura
Drizzle
DevOps & Cloud
Docker
Kubernetes
AWS
Azure
CI/CD
GitHub Actions
Security & Research
5G Security
eSIM
TLS
Formal Verification
Penetration Testing
OWASP
ML & AI
PyTorch
XGBoost
XAI/SHAP
LLMs
RAG
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01/08
Alexandria Engineering Journal (Elsevier)
Revisiting the M2M remote SIM provisioning protocol: A comprehensive security and performance analysis
2026VIEW
First integrated security and performance analysis of M2M RSP protocol using formal verification. Uncovers critical vulnerabilities including absence of Perfect Forward Secrecy and proposes enhancements with TLS 1.3, SCP11b, and hybrid post-quantum cryptography.
02/08
Applied Sciences (MDPI)
Towards 6G Roaming Security: Experimental Analysis of SUCI-Based DoS, Cost, and NF Stress
2026VIEW
This paper presents an experimental analysis of Subscription Concealed Identifier (SUCI)-based Denial of Service (DoS) attacks, their associated costs, and the stress they place on network functions in the context of 6G roaming security.
03/08
Computer Modeling in Engineering & Sciences
Enhancing Roaming Security in Cloud-Native 5G Core Network through Deep Learning-Based Intrusion Detection System
2025VIEW
This research addresses security challenges in 5G roaming by designing a scalable 5G Standalone testbed, generating an intrusion detection dataset tailored to roaming threats, and proposing a deep learning-based intrusion detection framework for cloud-native environments.
04/08
Sensors (MDPI)
Evaluating Transport Layer Security 1.3 Optimization Strategies for 5G Cross-Border Roaming
2025VIEW
This research introduces Zero Round Trip Time Forward Secrecy (0-RTT FS), a novel protocol extension that achieves zero round-trip performance while maintaining comprehensive security properties, including PFS and replay protection.
05/08
IEEE ICCT Pacific 2025
Formal Verification of Remote SIM Provisioning Common Mutual Authentication using BAN Logic
2025VIEW
Formal verification of the Common Mutual Authentication protocol used in Remote SIM Provisioning using BAN Logic to ensure security properties are maintained.
06/08
Medium - OWASP Cebu
With Great Power Comes Great Explainability: Leveraging XAI and SLMs for Payment Fraud
2024VIEW
Exploring the use of Explainable AI (XAI) and Small Language Models (SLMs) combined with classical machine learning techniques for anomaly detection in payment fraud scenarios.
An in-depth analysis of the Kerberos authentication protocol and its role as a precursor to modern Zero Trust security architectures.
Implementation and analysis of policy-based security mechanisms for database protection using PostgreSQL's procedural language.
01
08
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